Then the formal definition of extension knowledge representation is proposed and compared with several original methods of knowledge representation.

由此，提出了可拓知识表示方法的形式化定义，并且将它与原有的几种知识表示方法进行了详细的比较。

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This paper presents linguistic cloud models for knowledge representation and uncertainty handling in KDD. Multi dimensional cloud models are introduced as the extension of one dimensional ones.

该文提出用语言云模型用于KDD中知识表达和不确定性处理，引入了多维云模型作为一维模型的扩展。

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The method of knowledge representation based on rule extension is adopted in the knowledge representation mode.

在知识的表示模式中，采用了基于规则扩展的知识表示方法。

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